tests/crashgetbundler.py

match: add basic wrapper for boolean function

This serves as a generic wrapper for fileset predicates. In future patches,
a fileset expression will be mapped to a tree of matchers for a better support
of match attributes such as visitdir(). For example,

  $ hg debugwalk -v 'set:contrib/** and binary()'
  * matcher:
  <intersectionmatcher
    m1=<patternmatcher patterns='(?:contrib/.*$)'>,
    m2=<predicatematcher pred=binary>>
  ...

from __future__ import absolute_import

from mercurial.i18n import _
from mercurial import (
        changegroup,
        error,
        extensions
    )

def abort(orig, *args, **kwargs):
    raise error.Abort(_('this is an exercise'))

def uisetup(ui):
    extensions.wrapfunction(changegroup, 'getbundler', abort)